linux-kernel - Re: [PATCH] staging: ft1000-pcmcia: Fix ft1000_dnld() to work also on 64bit architectures.

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Message-ID: <4D89CB04.70003@gmail.com>
Date:	Wed, 23 Mar 2011 11:27:16 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Marek Belisko <marek.belisko@...n-nandra.com>
CC:	gregkh@...e.de, devel@...verdev.osuosl.org,
	Stano Lanci <chl.pixo@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: ft1000-pcmcia: Fix ft1000_dnld() to work also
 on 64bit architectures.

On 03/23/2011 08:08 AM, Marek Belisko wrote:
> From: pixo <pixo@...o-LIFEBOOK-E8310.(none)>
> 
> Firmware file needs to be read by 4bytes also on 64 bit architectures.
> Change long type to u32 and also extend checking. Tested on 32 and also
> 64 bit architectures.
> 
> Signed-off-by: Stano Lanci <chl.pixo@...il.com>
> Signed-off-by: Marek Belisko <marek.belisko@...n-nandra.com>
> 
> Tested-by: Stano Lanci <chl.pixo@...il.com>
> ---
>  drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c |   78 ++++++++++----------
>  1 files changed, 39 insertions(+), 39 deletions(-)
> 
> diff --git a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c
> index b0729fc..fb375ea 100644
> --- a/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c
> +++ b/drivers/staging/ft1000/ft1000-pcmcia/ft1000_dnld.c
> @@ -95,47 +95,47 @@ void put_request_value(struct net_device *dev, long lvalue);
>  USHORT hdr_checksum(PPSEUDO_HDR pHdr);
>  
>  typedef struct _DSP_FILE_HDR {
> -	long build_date;
> -	long dsp_coff_date;
> -	long loader_code_address;
> -	long loader_code_size;
> -	long loader_code_end;
> -	long dsp_code_address;
> -	long dsp_code_size;
> -	long dsp_code_end;
> -	long reserved[8];
> +	u32  build_date;
> +	u32  dsp_coff_date;
> +	u32  loader_code_address;
> +	u32  loader_code_size;
> +	u32  loader_code_end;
> +	u32  dsp_code_address;
> +	u32  dsp_code_size;
> +	u32  dsp_code_end;
> +	u32  reserved[8];
>  } __attribute__ ((packed)) DSP_FILE_HDR, *PDSP_FILE_HDR;

As you also changed signedness, did you check (or do you know) that the
values cannot be negative?

Or at least the change doesn't affect code flow?

regards,
-- 
js
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